1110138989 has 2 divisors, whose sum is σ = 1110138990. Its totient is φ = 1110138988.

The previous prime is 1110138979. The next prime is 1110139067. The reversal of 1110138989 is 9898310111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1029318889 + 80820100 = 32083^2 + 8990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110138989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110138979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555069494 + 555069495.

It is an arithmetic number, because the mean of its divisors is an integer number (555069495).

Almost surely, 2^1110138989 is an apocalyptic number.

It is an amenable number.

1110138989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110138989 is an equidigital number, since it uses as much as digits as its factorization.

1110138989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 41.

The square root of 1110138989 is about 33318.7483108234. The cubic root of 1110138989 is about 1035.4420195741.

The spelling of 1110138989 in words is "one billion, one hundred ten million, one hundred thirty-eight thousand, nine hundred eighty-nine".